-LRB- CNN -RRB- -- Argentine President Cristina Fernandez de Kirchner was told to take a month off work after doctors diagnosed her with a subdural hematoma .

The diagnosis and the doctor 's recommendation mean Fernandez will be out of commission during the critical campaign season for congressional elections on October 27 .

Spokesman Alfredo Scoccimarro said Saturday the president will suspend all her activities .

A subdural hematoma is a blood clot on the brain 's surface beneath its outer covering , called the dura . Often , in people over 60 , a brain trauma can cause the blood vessels in the brain to tear , and blood to clot .

In August , Fernandez , 60 , suffered a cranial trauma , for which doctors conducted a brain scan and found normal results with no symptoms at the time , Scoccimarro said .

Doctors at a Buenos Aires hospital discovered the hematoma on Saturday after a neurological evaluation , he said .

According to Argentina 's constitution , the vice president would assume the presidency temporarily in the president 's absence , but officials have not said if that will occur in this situation .

Fernandez 's health made headlines when she underwent surgery in January 2012 to remove her thyroid , after doctors said they detected cancer in the gland .

A few days later , a spokesman for Fernandez said she did not actually have cancer and that doctors had discarded their original diagnosis .

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Cristina Fernandez de Kirchner has a blood clot on the surface of her brain

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A month of rest is recommended

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Spokesman : The president suffered cranial trauma in August